Rotary Heat Exchanger

Table of Contents1 Company Presentation

1.1 Footprint 1

1.2 Quality insurance 1

2 Product 2.1 rotor matrix 2

2.2 Casing 4

2.3 Drive equipment 6

3 Knowledge

3.1 Principle of rotary heat exchangers 7

3.2 Leakage/Cross contamination 7

3.3 3Å molecular sieves 8

3.4 Double Wheel Concept 9

3.5 Anti-Corrosion 10

3.6 Rotor cleaner (air) 10

4 Reference

4.1 Governmental project 11

4.2 Hospital project 12

4.3 Casino project 13

4.4 Hotel project 14

4.5 Commercial building 15

4.6 Industry project 16

4.7 Marine project 17

4.8 Reference List 18

/ 01

1 Company PresentationÖstberg is a Swedish company with roots all the way back to 1971 when Hans Östberg was one of the recognized inventors of the circular dunt fan. Today Östberg is one of the leading global players in ventilation and energy recovery.

With 4 manufacturing facilities on 2 continents in 3 different countries and with a global network of Distributors and Partners Östberg secure a close connection to the local market. Östberg name is connected with high quality and energy efficient products with continually development to match new demands from the global market.

Today Östberg is a multimillion dollar company with focus on duct connected fans, small energy recovery units for the family home market, large air handling units for shopping malls and factories, and energy recovery rotors for all applications.

1.2 Quality insurance

1.1 Footprint

All Östberg operations are certified by ISO 9001 Standards

The ISO 9000 family addresses various aspects of quality management and contains ISO’s best known standards. The standards provide guidance and tools for companies and organizations who want to ensure that their products and services consistently meet customer’s requirements, and that quality is consistently improved.

Östberg Energy Recovery Rotors are certified by EUROVENTwww.eurovent-certification.com Eurovent Certification: certifies the performance ratings of air-conditioning and refrigeration products according to European and international standards. The objective is to build up customer confidence by levelling the competitive playing field for all manufacturers and by increasing the integrity and accuracy of the industrial performance ratings.

1.2 Quality insurance 1

3.2 Leakage/Cross contamination 7

3.4 Double Wheel Concept 9

3.5 Anti-Corrosion 10

3.6 Rotor cleaner (air) 10

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2 Product components2.1 rotor matrix

The rotor matrix is made for laminar airflow using alternating layers of flat and corrugated foil to provide a structure comprising small, triangular channels.

The rotor are either in one piece or sectorized. One piece rotor are made in diameters ranging between Ø300-2450 mm, while sectorized rotor have diameters ranging of Ø801-5000 mm. Sectorized rotor are divided into segments that are assembled when the rotor is installed.

The rotor are as standard manufactured for vertical installation, horizontal installation is an option and must be notified at ordering. One piece rotor up to Ø 2100 mm may be installed horizontally, and sectorized up to Ø3200 mm.

The illustration above shows the number of segments for sectorized rotors of different dimensions.

Five different well heights are available to enable optimization of efficiency and pressure drop

Rotor type Well height Well length

Extra Low (XL) 1.5 mm 3.0 mm Special Low (SL) 1.65mm 3.0 mm Low (L) 1.7 mm 4.0 mm Normal (N) 2.0 mm 4.0 mm High (H) 2.7 mm 5.5 mm

Rotors are available in widths of 250, 200, 150 or 100 mm. in all type of foil. For large OEM customer a customized width can be provided.

Well length

Wellheight

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Rotors have maintenance-free hubs with life-time lubricated ball or roller bearings in a protected location in the hub (std). For special applications pillow block can be installed on the casing. All bearings are sealed to prevent dirt and humidity from entering the bearing.

Standard Hub, shaft and bearing Special Hub, shaft and pillow block

2.1.1 Foil/MediaCondensation rotors (Sensible), non-hygroscopic rotors (OT, OC, OK)The condensation rotor is a cost-efficient solution to recover heat and is suitable for standard applications in comfort ventilation. Humidity is only transferred in cases when the dew point of one of the air streams is reached.

Hygroscopic rotors (OE)The hydroscopic surface of this rotor class supports humidity transfer. Typically used for standard applications in comfort ventilation systems to recover humidity.

Hygroscopic rotors (OH)60% of the media in this rotor is coated with molecular sieve 3Å the remaining 40% is standard sensible media. The mix of sensible and Sorption rotor gives a HYBRID with extended support for humidity transfer. The OH have a performance slightly lower than OM, used for standard applications in comfort ventilation systems where extended need of humidity transfer is requested.

Sorption rotor (OM) The high performance desiccant coatings of the sorption rotor OM (molecular sieve 3Å) provide a MAXIMUM of humidity transfer capacity for MINIMAL Carry Over. The high humidity efficiency is constant throughout all climate conditions. Sorption rotors are especially designed for summer season cooling recovery and dehumidification of supply air. Therewith, it should always be used in humid and hot climates, with dry cooling systems (chilled beams) and when in winter time humidifiers are used. This substantially reduces the cooling and humidification demand of the HVAC system. The OM rotor also provides an extended corrosion protection and is therefore also suitable for marine applications.

Increased rigidity (OK)

Increased corrosion protection (OC, OK)

Under extreme strain, for example, applications with automatic cleaning devices using high pressure water in industrial equipment, we suggest a foil thickness of 100 micron.

In an environment with aggressive components in the air it is either recommended to use a rotor with epoxy coating (OC) or a sea water corrosion resistant foil (OK) for better corrosion protection. Such applications can be, e.g. dairy industry, on ships or for coastal areas. Other applications for additional corrosion protection are adiabatic cooling and cooling rotors of Direct Evaporative Cooling (DEC) units.

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2.2 CasingCasing is consist of a frame structure, purge sector and seals.

2.2.1 StructureThere are two different casing types; the slide-in model and the modular unit.

Slide-in model, (CS, CSD, DS)

Slide-in models fit into air handling units (AHU’s) thus making a uniform AHU appearance possible. Slide-in casings are always uninsulated and have a large, exposed rotor surface in relation to casing size. Slide-in casings can be provided with one piece (max Ø2450 mm) or sectorized rotors (max Ø5000 mm).

CS type casing: Slide-in casing for one piece rotors, Ø300-2450 mm.

CSD type casing: Slide-in casing for sectorized rotors Ø 801 -2800 mm.

DS type casing: Slide-in casing for sectorized rotors Ø3001-5000 mm.

Modular units (CS, CSD, D)

Complete units for connection to other parts of air handling unit or directly to ducting. The unit is modified so that connection can be carried out using e.g. connection panels or corner connectors. The modules are delivered with or without insulation. The modular unit can be made with a one piece casing (one piece rotors) up to Ø2450 mm and divided casings (sectorized rotors) up to Ø5000 mm. Accessories such as inspection window, tubular frame, lighting and condensate trays are available.

CS type casing: Modular unit for one piece rotors Ø300- 2450mm.

CSD type casing: Modular unit for sectorized rotors Ø801-3000 mm.

D type casing: Modular unit for sectorized rotors Ø3001-5000 mm.

Type Condensation Hygroscopic Sorption Remarks OT x Untreated aluminium foil

OE x Oxidized aluminium foil OC x Epoxy-coated foil OK x Seawater resistant foil

(AlMg), 100 µ. OH x 3Å Molecular sieve and

untreated aluminium foil OM x 3Å Molecular sieve

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2.2.2 Standard dimensions:Östberg Energy Recovery units can be ordered in 40 standard sizes, this gives 4000 options as standard, with price competiveness and short delivery time. If the requested dimension is missing, Östberg can manufacture any dimension in between the standard sizes according to the customers demand.

Width(mm) Height(mm) Depth(mm)400 W CS 570 570 290 20 40 700 700500 W CS 650 650 290 26 40 1000 1000600 W CS 720 720 290 32 40 1500 1500700 W CS 800 800 290 41 40 2000 2000800 W CS 900 900 290 50 40 2500 2500900 W CS 1060 1060 330 60 40 3500 3500

1000 W CS 1160 1160 330 71 40 4500 45001050 W CS 1210 1210 330 78 90 5000 50001100 W CS 1260 1260 330 84 90 5500 55001150 W CS 1310 1310 330 91 90 6000 60001200 W CS 1360 1360 330 99 180 6500 65001250 W CS 1410 1410 330 106 180 7000 70001300 W CS 1460 1460 330 113 180 7500 75001350 W CS 1510 1510 330 120 180 8000 80001400 W CS 1560 1560 330 128 180 8500 85001450 W CS 1610 1610 330 136 180 9000 90001500 W CS 1660 1660 330 144 180 10000 100001600 W CS 1760 1760 330 160 180 11000 110001700 W CS 1860 1860 330 175 370 12000 120001800 W CS 1960 1960 330 192 370 14000 140001900 W CS 2060 2060 330 210 370 15000 150002000 W CS 2160 2160 330 230 370 17000 170002100 W CS 2260 2260 330 250 370 19000 190002200 W CS 2360 2360 330 270 370 20000 200002300 W CS 2460 2460 330 290 370 22000 220002400 W CS 2560 2560 330 310 370 25000 25000900 S CSD 1060 1060 330 66 40 3500 3500

1000 S CSD 1160 1160 330 77 40 4500 45001050 S CSD 1210 1210 330 85 90 5000 50001100 S CSD 1260 1260 330 91 90 5500 55001150 S CSD 1310 1310 330 98 90 6000 60001200 S CSD 1360 1360 330 106 180 6500 65001250 S CSD 1410 1410 330 122 180 7000 70001300 S CSD 1460 1460 330 131 180 7500 75001350 S CSD 1510 1510 330 140 180 8000 80001400 S CSD 1560 1560 330 150 180 8500 85001450 S CSD 1610 1610 330 160 180 9000 90001500 S CSD 1660 1660 330 169 180 10000 100001600 S CSD 1760 1760 330 179 180 11000 110001700 S CSD 1860 1860 330 189 370 12000 120001800 S CSD 1960 1960 330 199 370 14000 140001900 S CSD 2060 2060 330 210 370 15000 150002000 S CSD 2160 2160 330 221 370 17000 170002100 S CSD 2260 2260 330 244 370 19000 190002200 S CSD 2360 2360 330 285 370 20000 200002300 S CSD 2460 2460 330 310 370 22000 220002400 S CSD 2560 2560 330 338 370 25000 250002500 S CSD 2660 2660 330 366 370 27000 270002600 S CSD 2760 2760 330 395 370 30000 300002800 S CSD 2960 2960 330 429 750 34000 340003000 S CSD 3160 3160 330 460 750 38000 380003200 S DS 3400 3400 430 869 750 43000 430003400 S DS 3600 3600 430 961 750 48000 480003600 S DS 3800 3800 430 1092 750 54000 540003800 S DS 4000 4000 430 1181 750 60000 600004000 S DS 4200 4200 430 1272 750 70000 700004200 S DS 4400 4400 430 1368 750 77000 770004400 S DS 4600 4600 430 1466 750 84000 840004600 S DS 4800 4800 430 1568 750 90000 900004800 S DS 5000 5000 430 1673 750 100000 1000005000 S DS 5200 5200 430 1782 750 110000 1100005200 S DS 5400 5400 430 1898 750 120000 1200003200 S D 3430 3430 430 895 750 43000 430003400 S D 3630 3630 430 990 750 48000 480003600 S D 3830 3830 430 1125 750 54000 540003800 S D 4030 4030 430 1216 750 60000 600004000 S D 4230 4230 430 1310 750 70000 700004200 S D 4430 4430 430 1409 750 77000 770004400 S D 4630 4630 430 1510 750 84000 840004600 S D 4830 4830 430 1615 750 90000 900004800 S D 5030 5030 430 1723 750 100000 1000005000 S D 5230 5230 430 1835 750 110000 110000

W/S TypeCasingDiameter

(mm)

Net Weight Including Drive (Kg)

Power （w）

Recommended Supply Air

(m3/h)

Recommended Extract Air

(m3/h)

2.2.3 Purge sectorTo prevent exhaust air mixing with supply air by carryover, most installations have a purge sector. Its function is to flush the rotor matrix with outside air before it rotates into the supply air duct. In this way only outside air is present in the matrix and no carryover of exhaust air to supply air is possible. The purge sector is located on the supply side of the supply air duct. No purge sector is installed on the opposite side, where the matrix leaves the supply air duct, as transfer of outside air to outlet air does not impair supply air quality.

2.2.4 Seals

To achieve the best possible prevention from leakage between exhaust and supply air the Östberg Casing design offer multiple options of sealing system. For standard applications a brush sealing is installed on the casing (between the rotor matrix and the casing). For improved sealing a second sealing can be installed on the rotor periphery which give a "wrap-around" sealing system. The wrap- around sealing system provide the best possible sealing system to prevent leakage along the rotor periphery. See also “3.2 Leakage/Cross contamination”.

2.3 Drive equipmentDrive equipment is consist of motor, control unit and drive belt.

Rotors are driven by a motor mounted on a bracket inside the casing. All rotors are driven by the motor via a belt to the rotor periphery.

2.3.1 Constant drive

2.3.2 Variable drive

Constant drive means that rotor speed remains constant during operation, or is switched off to remain stationary – so called on/off drive.

Induction motors with reduction gearing are available in three-phase and single-phase versions.

Asynchronous motors with worm gears are available in three-phase and single-phase versions.

Variable drive enables rotor speed regulation and thus optimal control throughout the year.

The drive unit consists of a motor and control unit that regulates motor rpm in relation to an input signal.

MicroMax MiniMax VariMax

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3 Knowledge3.1 Principle of rotary heat exchangersÖstberg rotary heat exchangers are classified as regenerative air-to-air energy recovery units. Air-to-air energy exchangers can recycle up to 85% of the energy from conditioned building exhaust, or high temperature exhaust from industrial processes. Exhaust recovery ventilation utilizes energy from the exhaust air stream to precondition the outside air being introduced into the building. In the winter it provides free heating and in the summer free cooling.

Applying air-to-air energy recovery can help achieve a higher LEED® status, meet the requirements of ASHRAE 90.1, and save significantly on operating cost with a quick payback. Choose from stand-alone heat exchanges or pre-engineered, yet customizable modular units that incorporate heat recovery, humidity control, and other air treatment options.Thanks to the alternating airflow direction, the rotor is self-cleaning and frost proof to a large extent.The rotor matrix consists of small sinusoidal channels made from thin aluminum foil.

Untreated aluminum foil is used for sensible heat recovery. Epoxy-coated aluminum or seawater resistant foil with higher magnesium content is best suited in installations in aggressive environments such as industrial or maritime locations. Sensible rotors transfer only humidity during the winter when exhaust air condenses in the rotor matrix and is taken up by the supply air stream.

Hygroscopic or sorption-treated rotors transfer airborne humidity (latent energy) year round. The aluminum foil in hygroscopic rotors is oxidized to create a surface that transfers humidity. Sorption rotors foil is permanently coated with sorption material of the type 3Å molecular sieve, which has an extremely high humidity transfer capacity.

3.2 Leakage/Cross contaminationDefinition of leakage: leakage is the % of air that’s transferred from one airstream to anther airstream. Definition of Cross contamination: cross contamination is the % of air or substrate in one airstream transferred to the other airstream due to type of sorption material.

Leakage:Leakage occurs either around the periphery of the rotor or via the middle beam dividing the airstreams. The positioning of the fans are vital for the % of leakage, in a correct planned Air- handling Unit the fan positioning prevents the exhaust air to “leakage” over to supply air stream. The positioning of the fans is the responsivity of the designer of the ventilation system.

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Periphery leakage:

The rotor is sealed- off from leakage around the periphery of the rotor. The standard application is a brush sealing attached to the casing that seals off the air toward the rotor surface.

Östberg offer the possibility to add an additional sealing along the rotors periphery. This sealing type is called “wrap- around sealing”.

Middle beam leakage:The rotor is sealed- off from lekagage at the meiddle beam using a brush sealing. This gives under normall application enougth sealing function. But if the Air handling unit have unfavrable pressure differences between the two airstreams an additional brushsealing can be applied to minimize leakage.

Cross contamination:To prevent cross contamination rotors with pure 3Å molecular sieve shall be used. All other known adsorptions media on the market today will transfer compounds in the exhaust air stream to the supply air stream. Östberg OM is a pure 3Å molecular sieve media. See 3.3 for more infromation.

3.3 Molecular Sieves 3ÅA molecular sieve is a material with uniform pores size (very small holes). The molecular sieve is measured in ångströms (Å). Molecular sieve 3Å do not adsorb compounds with diameters larger than 3 Å. The water vapor (humidity) is smaller than 3Å and is therefore adsorbed by the Molecular sieve 3Å. Installations and tests show that a 3Å molecular sieve is the best choice for reducing the risk of odor transfer via the sorption coating.

Sorption rotorsÖstberg Molecular Sieve 3Å OM rotors provide exceptionally high humidity efficiency up to 85%. Sorption rotors provide an excellent method of cooling and de-humidifying outside air before it reaches the air handling unit cooling coil.

Cooling capacity savings• Direct investment pay off • Lower investment cost in cooling capacity • Lower energy consumption in cooling period • Better indoor air quality - Minimum Carry Over - Increased humidity in winter season • Lower investment and running costs for humidification• Better performance for dry cooling systems• Increase cooling capacity in existing systems• 5-10 °C lower temperature for freezing protection

K+

K+

K+

K+3Å

3

26 27 28 29 30 31 32 33 34 35 36

COOLING CAPACITY SAVINGS

Coo

ling

capa

city

[kW

/m/s

}

Air temperature,inside, RH 50%

Ouside air temperature [C] - RH 50%

Sensible

OMOM

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Advantages of 3Å molecular sieves

The Östberg OM Molecular Sieve 3Å provides high selectivity for water molecule absorption (2.7Å size). • Performance of 3Å technology is proven in several international and independent studies • It is recommended in cases where cross contamination needs to be minimized • Minimized Carry Over of VOC’s from exhaust air to supply air

Lower investment costs in cooling capacity both in AHU’s and cooling system

• The cooling capacity saving is 20 – 50% • The required cooling capacity will decrease by 10- 25 kW/m3/s air flow compared to sensible energy recovery systems• Smaller compressors, condensers or cooling towers or higher evaporation and lower condensing temperatures• Smaller electrical connection costs and power consumption in cooling system• Lower water flows to cooling coils and smaller pipe works and valves• Savings in cooling equipment investments are higher than additional cost of sorption treatment of the rotor

Lower investment cost in supply air humidification

Lower running costs of ventilation, cooling and humidification

Better working conditions for dry cooling systems (chilled ceilings or beams)

Better indoor air quality during winter

• Supply air humidification equipment will be smaller, due to high rate of humidity recovery from the exhaust air

• Cooling recovery in summer time• Humidity recovery in winter time

• Almost constant humidity efficiency provides effective dehumidification of outside air in extreme summer conditions • Smaller requirement for raised water temperature to unit

• High humidity recovery from exhaust air during winter season

3.4 Double Wheel ConceptIn regions with high air temperature and humidity or buildings with dry cooling systems (chilled beams, chilled ceilings), the supply air needs to be cooled and dehumidified. Traditionally air dehumidification has been done by cooling the air to condense the humidity from the air and reheating it to the requested air temperature.

Compared to traditional systems the Double Wheel Concept is cooling, dehumidifying and reheating the supply air more energy effective.

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3

2

1

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The Double Wheel Concept comprises the following components and functions:

1. OM sorption rotor: The OM rotor dehumidifies and cools warm outside air very efficiently.2. Cooling coil: Outside air is further dehumidified by the cooling coil until the preferred temperature is reached.3. OT Condensation rotor: The condensation rotors warms the air to the required supply air temperature.4. At the same time, exhaust air is cooled which means the OM rotor works more efficiently.

The Östberg Double Wheel Concept saves up to 60% of the total cooling capacity and requires lower investment and running costs compared to traditional systems. As rule of thumb, the additional cost of the sensible wheel can be saved in the lower investment compared to traditional system components, coils, chillers, cold and hot water piping installation, pumps, valves, controls and electric power supply costs. Accurate total investment costs analyze of the complete installation will show major savings in initial costs. Both cooling and heating energy savings will be additional profit of the investment.

3.5 Anti-CorrosionHigh corrosion risk

Great care should be taken when choosing materials in areas where there is a high risk of corrosion such as industrial use.

All casing parts can be powder coated to enhance corrosion resistance, or a stainless steel casing can be selected. All bearings are life-time lubricated and extra sealed for extended life. Vital parts such as bearing components are coated with tectyl for enhanced corrosion resistance.

Epoxy-coated foil (OC) should be selected. Epoxy-coated foil provides extremely effective protection against corrosion. Seawater-resistant foil (OK) with magnesium content is available; an alternative to epoxy-coated foil, it provides excellent corrosion protection.

Marine ventilationIn maritime environment there’s a request of increased corrosion protection, both for parts and media.

Östbergs standard marine option is casing in Powder coated Galvanized steel and rotor media in OM for sorption performance and OK for sensible performance. Östberg standard marine application have passed SWAAT test with non-corrosion for a period of 10 years. If demand for higher corrosion resistance is needed the casing is offered in stainless steel.

3.6 Rotor cleaner (air)Östberg Rotor Cleaner use the latest technology to ensure that the whole rotor is cleaned.The cleaning nozzle is controlled by a Screw Actuator which makes is possible to move the nozzle speed down to 3 mm / minute. The Östberg Rotor Cleaner is controlled via a PLC, where the user types in the rotor diameter and number of cleaning cycles (number of cycles depends on type of dirt and grade of dirt) the Östberg Rotor Cleaner will stop when the number of cycles has been achieved.

Östberg Rotor cleaner is as standard offered as a Single unit for permanent installation.

Accessories:

• Dust collection tray with Vacuum system• Double nozzle (increases the cleaning speed)• Rotor Cleaner for movable version (service version, excl. air compressor)• Rotor Cleaner for movable version (service version, incl. air compressor)• Quick Klick (for movable service version, 1 quick click/Air Handing Unit)

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4 Reference4.1 Governmental Project

Project Name: National Museum of ChinaThe National Museum of China (NMC) is located at the east side of Tiananmen Square, opposite the Great Hall of the People. NMC, an integrated national museum under the Ministry of Culture of China, draws equally from both history and art and is dedicated to its collections, exhibitions, research, archeology, public education and cultural communication. 2010, NMC carried out a project to expand the museum so that it now covers 192,000 square meters. Today NMC is the largest museum in the world, with first class facilities and capabilities.

National Museum of China used 45 sorption rotor as energy recovery equipment for transfer of sensible and latent energy.

Hong Kong Science & Technology Parks Corporation Hong Kong-Shenzhen Western Corridor

Guangzhou South Railway Station Suzhou Museum

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4.2 Hospital project

Project Name: Children’s Hospital of Shanghai

The first pediatric hospital in China, Children’s Hospital of Shanghai is a 370-bed comprehensive pediatric hospital and specializes in leading-edge pediatric clinical care, health care, education, research and rehabilitation. In the more than 70 years since its founding, Children’s hospital of Shanghai is famous for its historical culture and research achievements.

Östberg provided energy recovery equipment to ensure the hospital is done in a pleasant environment.

The First Hospital of China Medical University Tianjing Medical University General Hospital

Beijing Children's Hospital Shanghai Huashan hospital

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4.3 Casino project

Project Name: The Seminole Casino in Hollywood

The Seminole Casino in Hollywood offers 500 rock star suites, signature and award-winning restaurants, a 5,500-seat Hard Rock Live arena, a 4.5 acre tropical pool oasis & Beach Club, a full-service Rock Spa, fitness center, high-energy nightlife, boutique shopping and convention space.The Seminole Casino in Hollywood use rotary heat exchanger from Östberg in the ventilations system to recover highest possible energy from the exhaust air. To ensure the best possible Indoor Air Quality the rotors is coated with Molecular Sieve 3Å.

Niagara Falls Casino Mt. Airy Casino

Horseshoe Casino Harrah’s Casino

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4.4 Hotel project

Project Name: InterContinental Shanghai Puxi

InterContinental Shanghai Puxi is strategically located in the Zhabei District, adjacent to a transportation hub and convenient for many attractions. The hotel boasts 533 rooms with 25 Executive Suites, three Penthouse Suites, one InterContinental Suite and two Presidential Suites plus a spacious Club InterContinental Lounge.

Östberg rotors not only used in InterContinental, but also can be found in many other five-star hotel hotels, such as Lincoln, those of the Hilton, Shangri-La, Marco Polo and Ritz-Carlton Hotel.

Pudong Shangri-La Hotel The Ritz-Carlton Hotel Xi’an

Suzhou's Jinji Lake Grand Hotel Marco Polo Hotel Wuhan

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4.5 Commercial Building

Project Name: Beijing Jiaming Center

Jiaming focuses on high-end residential houses, commercial houses and new urbanization construction. Jiaming proactively pushes application of scientific technologies for energy saving and other green purposes. Jiaming was awarded Platinum Certificate and Gold Certificate twice by LEED.Actually Östberg rotors play an important part for the whole building energy saving and green purposes.

Oriental Fisherman's Wharf Galaxy SOHO

Jinbao Place Shopping Center Twin Towers in Guiyang

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4.6 Industry Project

Project Name: Volkswagen Automatic Transmission Tianjin Co., Ltd.

Volkswagen Automatic Transmission (Tianjin) Co., Ltd (VWATJ) is a wholly owned subsidiary of the Volkswagen (China) Investment Co. Ltd .VWATJ will launch three new types of transmission products. This new standard for efficient and comfortable transmissions represents the most advanced technology in the automotive industry.

Volkswagen choosed Östberg rotor which is also the advanced technology in energy recovery.

Volvo car engine manufacturing (Zhangjiakou) co., LTD Evonik Degussa (China) Co., Ltd. Shanghai Branch

Beijing SIEMENS Center Building Bayer (Shanghai) Research and Development Center

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4.7 Marine Project

Project Name: Celebrity Silhouette

Östberg Rotors has been successfully used in many Luxury liners. The energy is more expansive to produce on a vessel than on a land based power plant. This makes it very important for the ship owner to maximize the energy recovery on the vessel. Östberg OH has been chosen by many ship owners due to its extremely high energy recovery but also because the high corrosion resistance. The unique combination of high performance and corrosion resistance gives not only a fast payback of investment but also an extended life time of the investment.

Disney Magic Celebrity Equinox

Celebrity Solstice Celebrity Eclipse

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4.8 Reference List

Area Project Name Type Year Item Category

Beijing China International Exhibition Center (New Center) HX1 2008 Government Project

Jiangsu The memorial hall of the victims in Nanjing massacre by Japanese invaders

HX1 2007 Government Project

Beijing Beijing Zhongguancun Science Park HX1 2009 Government Project

Shanghai Children's Hospital of Shanghai HM1 2010 Hospital Project

Jiangsu Jinji Lake Shilla Hotel HX1 2008 Hotel Project

Guizhou Huangguoshu Hotel Guiyang HX1 2014 Hotel Project

Hubei Wuhan Fanhai Part I HX1 2015 Hotel Project

Henan Langfang New World center HX1 2015 Hotel Project

Beijing Jingyaguang Buiding HX1 2009 Commercial Building

Beijing Beijing Yintai Centre HX1 2007 Commercial Building

Zhejiang Wanda Plaza HX1 2012 Commercial Building

- SOHO in Beijing, Shanghai, Wuhan HX1 2011-2014 Commercial Building

Liaoning Shenyang Xingyue south shore HM1 2015 Commercial Building

Liaoning Olympia 66 ‧ Dalian HM1 2014 Commercial Building

Tianjing Riverside 66 ‧ Tianjin HM1 2013 Commercial Building

Liaoning Forum 66 ‧ Shenyang HM1 2012 Commercial Building

Hebei New world center in Langfang HM1 2014 Commercial Building

Hebei Tangshan financial center SH1 2015 Commercial Building

Beijing Changping Central Plaza HM1 2015 Commercial Building

Beijing Beijing Yuetan Cente HM1 2015 Commercial Building

Beijing Northern Territory ST1 2015 Commercial Building

Beijing Tongzhou poly Central Plaza SH1 2015 Commercial Building

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Area Project Name Type Year Item Category

Beijing Beijing West Center SH1 2015 Commercial Building

Guangzhou Guangzhou Leatop Plaza HM1 2008 Commercial Building

Liaoning New World Shenyang Convention and Exhibition Centre (NWSYCEC) HX1 2015 Commercial Building

Hongkong Hong Kong General Chamber of Commerce Building HM1 2007 Commercial Building

Chongqing Ruian Chongqing new world HX1 2012 Commercial Building

Jiangsu Wuxi Ikea HM1 2013 Commercial Building

Liaoning Eton Place Dalian HX1 2009 Commercial Building

Zhejiang Bosch in Hangzhou HX1 2007 Industry Project

Shanghai Evonik Degussa (China) Co., Ltd. Shanghai Branch HM1 2013 Industry Project

Shanghai ExxonMobil (Shanghai) R&D center HM1 2011 Industry Project

Guangzhou Dongguan HUAWEI South Factory STE1 2009 Industry Project

Liaoning Shengyang GM FactoryⅡ (including paint shop) HX1 2012 Industry Project

Shanghai Shanghai automobile Commercial Vehicle Co., Ltd. No. 3 workshop

HX1 2014 Industry Project

Beijing China Construction Bank Beijing Data Center HM1 2013 Industry Project

Beijing Agricultural Bank of China Beijing Data Center HM1 2015 Industry Project

Beijing Institute of physics, Chinese Academy of Sciences HX1 2011 Industry Project

Beijing China National Center for Biotechnology Development HX1 2012 Industry Project

Shanghai Solvay (Shanghai) R & D Center HM1 2012 Industry Project

Beijing Novartis (China) biomedical research center HX1 2013 Industry Project

Shangdong Yantai Dongyue GM factory ST1 2012 Industry Project

Fujian ABB group in Xiamen HM1 2016 Industry Project

Zhejiang Cixi Geely new factory ST1 2016 Industry Project

In the 1970s Hans Ostberg, owner and founder of Ostberg was one of the inventor of the inline duct fan, which revolutionary the ventilation system design. Ostberg

inline duct fans are installed in more than 2.8 million applications.

By acquisition 2004 Ostberg group became one of the largest manufacturer of Energy Recovery rotor. The last 10 years Ostberg Group has delivered over 0.5

million Energy Recover Rotors to customer in more than 80 countries.

At Östberg, we work to continually develop our products. Our innovative power is the driving force in our company and we work to consistently maintain the very

best quality on the market.

ÖSTBERG

Ostberg (Kunshan) Ventilation Co.,Ltd.426#, Kunjia Road, Kunshan City, Jiangsu Province, China

Tel: +86 512-57639555info@ca-ostberg.com

www.ostberg.com